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An automated deep-sea research vessel's communication buoy only accepts telemetry uploads from two specific scientific underwater gliders. Their identifiers and cryptographic access keys are shown in Table 1 below:

Table 1
Glider IDAccess Key
Triton_7T7_abyss_88
Nereus_3N3_trench_41

Develop an algorithm, using either pseudo-code or a flowchart, to authenticate telemetry uploads.

The algorithm must:

  • Prompt the transmitting device to enter its Glider ID and Access Key.
  • Check if the Glider ID and Access Key combination is correct.
  • If correct, output 'upload authorised'.
  • If incorrect, continually prompt the device to re-enter both its Glider ID and Access Key until a valid combination is entered.
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Representing algorithms Questions

Practise AQA GCSE Computer Science Representing algorithms with exam-style questions for GCSE Computer Science. 100 questions, matched to the AQA GCSE Computer Science (8525) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Representing algorithms Questions

  1. GCSE
  2. /Computer Science
  3. /Representing algorithms